{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T08:38:15Z","timestamp":1790671095068,"version":"4.1.0"},"reference-count":43,"publisher":"American Speech Language Hearing Association","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am J Speech Lang Pathol"],"published-print":{"date-parts":[[2018,8,6]]},"abstract":"<jats:sec>\n            <jats:title>Purpose<\/jats:title>\n            <jats:p>The current study examined overall articulatory range of movement (ROM) in individuals with amyotrophic lateral sclerosis (ALS). Differential involvement of articulators was also tested using articulatory working space in individuals with varying degrees of dysarthria severity and in typically aging individuals. A strong association between overall articulatory ROM and severity measures among individuals with ALS was hypothesized. In addition, it was hypothesized that differential involvement of articulators would be detected using overall articulatory ROM measures.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Method<\/jats:title>\n            <jats:p>Twenty-two speakers with dysarthria secondary to ALS and 22 typically aging speakers participated. Speech intelligibility and speaking rate were used as indices of severity. Movement range and overall articulatory working space area (convex hull) of the tongue, lower lip, and jaw were each measured by electromagnetic articulography while the speakers produced the Rainbow Passage.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>Tongue convex hull size was significantly correlated with both indices of severity. A significant interaction between articulators and groups was observed. Individuals with severe dysarthria had reduced tongue convex hull size and exaggerated lower lip convex hull size. ROM in the anterior\u2013posterior dimension showed a more notable differential involvement pattern than ROM in the superior\u2013inferior dimension. Results in the area under a receiver operating characteristic curve analysis revealed group-specific ROM sensitivity.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusions<\/jats:title>\n            <jats:p>The findings indicate that tongue ROM is reduced in individuals with more severe dysarthria when estimated using a standardized paragraph containing all American English phonemes. The articulatory working space measure could be useful for estimating speech dysfunction in ALS. ROM of the tongue decreases, but ROM of the lower lip and jaw each increase in individuals with severe dysarthria. Differential involvement of the articulators in the anterior\u2013posterior dimension needs to be further investigated.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1044\/2018_ajslp-17-0064","type":"journal-article","created":{"date-parts":[[2018,5,24]],"date-time":"2018-05-24T19:30:32Z","timestamp":1527190232000},"page":"996-1009","source":"Crossref","is-referenced-by-count":26,"title":["Articulatory Range of Movement in Individuals With Dysarthria Secondary to Amyotrophic Lateral Sclerosis"],"prefix":"10.1044","volume":"27","author":[{"given":"Jimin","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Communication Sciences and Disorders, The Pennsylvania State University, University Park"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Bell","sequence":"additional","affiliation":[{"name":"Department of Communication Sciences and Disorders, The Pennsylvania State University, University Park"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1310","reference":[{"key":"e_1_3_2_2_1","first-page":"287","volume-title":"Augmentative communication strategies for adults with acute or chronic medical conditions","author":"Ball L. 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